ions test Flashcards
bromide
add nitric acid then silver nitrate = cream precipitate
chloride
add nitric acid then silver nitrate = white precipitate
iodine
add nitric acid then silver nitrate = yellow precipitate
sulfate
HCL then barium chloride = white precipitate
carbonate
HCL = carbon dioxide bubbles given off
ammonium
add sodium hydroxide = ammonia gas given off
copper
add sodium hydroxide = blue precipitate
aluminium
add sodium hydroxide = colourless precipitate
zinc
add sodium hydroxide = white precipitate
lead
add sodium hydroxide = white precipitate
iron 3
add sodium hydroxide = reddish brown precipitate
iron 2
add sodium hydroxide = green precipitate
why add nitric acid
to remove halide ions
why add HCL
to remove carbonate ions
iron + dilute sulfric acid observation
bubbles of gas produced iron disasters and pale green solution formed